#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<assert.h>
char* my_strlen(char* dest,const char* src)
{
	char* ret = dest;
	assert(dest && src);
	while (*dest++ = *src++)
	{
		;
	}
	return ret;
}
int main()
{
	char arr1[] = "#######";
	char arr2[] = "hello";
	printf("%s", my_strlen(arr1,arr2));
	return 0;
}